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authorEugene Surovegin <ebs@ebshome.net>2013-08-26 11:53:32 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-09-07 22:09:58 -0700
commit6f3615326d368cbcc97c98d78fbc1036567520d1 (patch)
treec76366ba2925a00cc298f8fda5f24060e64daefa /drivers/tty
parent501a297b2351addf61311f9ed49dedb10a4fee9e (diff)
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powerpc/hvsi: Increase handshake timeout from 200ms to 400ms.
commit d220980b701d838560a70de691b53be007e99e78 upstream. This solves a problem observed in kexec'ed kernel where 200ms timeout is too short and bootconsole fails to initialize. Console did eventually become workable but much later into the boot process. Observed timeout was around 260ms, but I decided to make it a little bigger for more reliability. This has been tested on Power7 machine with Petitboot as a primary bootloader and PowerNV firmware. Signed-off-by: Eugene Surovegin <surovegin@google.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/hvc/hvsi_lib.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/hvc/hvsi_lib.c b/drivers/tty/hvc/hvsi_lib.c
index 3396eb9d57a..ac2767100df 100644
--- a/drivers/tty/hvc/hvsi_lib.c
+++ b/drivers/tty/hvc/hvsi_lib.c
@@ -341,8 +341,8 @@ void hvsilib_establish(struct hvsi_priv *pv)
pr_devel("HVSI@%x: ... waiting handshake\n", pv->termno);
- /* Try for up to 200s */
- for (timeout = 0; timeout < 20; timeout++) {
+ /* Try for up to 400ms */
+ for (timeout = 0; timeout < 40; timeout++) {
if (pv->established)
goto established;
if (!hvsi_get_packet(pv))